Horseshoe-calk.



No. 855.717. PATENTED JUNE 4, 1907. w. MBRRIGK.

HORSBSHOB GALK. APPLIOATION FILED M0. 26. 1905.

WILLIAM MERRICK, OF HARTFORD, CONNECTICUT.

HORSESHOE-CALK.

Specification of Letters Patent.

Patented June 4, 1907.

Application filed December 26,1905. Serial No. 293,393.

To all whom it may concern.-

Be it known that I, VVILLIAM MERRIcK, a citizen of the United States,and a resident of Hartford, in the county of Hartford and State ofConnecticut, have invented a new and Improved Horseshoe-Calk, of whichthe following is a specification.

My invention relates to the class of devices located on horse-shoes forthe purpose of preventing slipping, and the object of my in vention isto provide a device of this class that shall be extremely strong anddurable and that shall always present a sharpened surface until worn tothe base of the calk; and a further object of the invention is toprovide such a calk with means whereby the full benefits may always bederived therefrom. A form of device in the use of which these objectsmay be attained is illustrated in the accompanying drawings, in whichFigure 1 is a view in side elevation of -a shoe calk embodying myinvention, and shown as attached to a shoe. Fig. 2 is a top or plan viewof the same. Fig. 3 is a view in lengthwise central section through thecalk. Fig. 4 is a detail view in central vertical section showing amodified form of calk. Fig. 5 a top or plan view of this latter form ofca c.

While it is not my intention to limit my invention to use in a removablecalk, yet such a calk has been found by me to possess advantages whenconstructed in accordance with my invention, and I have therefore shownsuch a calk herein as one in connection with which to describe andillustrate my invention.

In the accompanying drawings the numeral 1 denotes the body of the calkwhich is preferably round in cross-section and slightly tapering fromthe base 2 to the tip. This base as herein shown is in the form of aflange projecting slightly beyond the walls of the body part of thecalk. This flange may be flattened or ground off on opposite sidespresenting flat surfaces 3 for the reception of a wrench by means ofwhich the screw threaded shank 4 may be inserted in a threaded recess inthe 'shoe in amanner common to removable calks of this generalcharacter.

An opening 5 is formed depthwise in the calk extending from the tip 6 toa point near the base 2. This opening conforms practically to the shapeof the outer surface of the body part so that the body part 1 is ingfrom the extreme bottom of the opening.

5. The central opening 5, as shown, terminates in a solid bottom fromwhich point the lateral opening extends. The bottom of the centralopening forms a bottom that completely resists the pressure from dirtforced into the central opening, and as a result the dirt is forced outof the lateral opening 7, so that the central opening 5 can not becomeclogged to a degree sufficient to prevent the full sharpening effectfrom being obtained.

While I have shown, in the drawings herein, a device provided with asingle lateral opening 7 as a device in which good results are obtained,yet I do not desire or intend to limit myself to acalk provided with asingle opening.

In the device shown in Figs. 4 and 5 of the drawings I have illustratedtwo lateral openings 8 extending to the inner or central opening 9.These lateral openings are preferably formed slightly out of line witheach other. These openings are formed in the body part in a manner toprovide a web or ridge 10. This construction provides means whereby dirtor the like that is forced into the central opening is cut or broken upand the particles are then allowed to escape through the lateralopenings.

l/Vhat I claim as my invention and desire to secure by Letters Patentis 1. A horse shoe provided with a calk having a depthwise openingterminating in a solid bottom and with a wearing surface extendingcompletely about said opening, the wall constituting the wearing surfacehaving a lateral opening extending from the bottom of the depthwiseopening to the outer surface of the calk.

2. A removable calk for horse shoes including a body part having adepthwise opening terminating in a solid bottom and with a wearingsurface extending completely about said depthwise opening, the wallforming this wearing surface having a lateral opening extending from thebottom of the depthwise opening to the outer surface of the calk.

3. A horse shoe having a calk with a depth- Wise opening terminating ina solid bottom and providing Walls of substantially uniform thicknessfrom top to bottom extending completely around the depthwise opening,the said Walls having a lateral recess opening from the bottom of thedepthwise recess to the outer surface of the oalk.

4. A removable calk for horse shoes in cluding a body part with meansfor attachment to the shoe, said body part having a depthwise openingterminating in a solid bottom With Walls extending completely about saidopening and of substantially uniform thickness from top to bottom of theopening, said Walls having a lateral opening extending from the bottomof the central opening to the outer surface of the calk.

5. A calk for horse shoes including a body part having a depthwiseopening terminating in a solid bottom and forming a Wearing surfaceextending completely about said depth- Wise opening, the Wall formingthe Wearing surface having a plural number of lateral openings extendingfrom the bottom of the depthwise opening to the outer surface of theealk.

6. A calk for horse-shoes including a body part having a depthwiseopening, and lateral openings extending from the depthWise opening tothe outer surface of the calk and arranged With a Web between the endsof the lateral openings.

WILLIAM MERRICK.

Vitnesses: i

ARTHUR B. JENKINS, LENA E. BERKOVITCH.

